How does oil purification work?
- Advanced dehydrating and degassing system that uses large-area three-dimensional flash distillation technique to remove moisture, gas from the transformer oil and paper insulation
- Mesh filters capture particles in the transformer oil
- Liquid level detectors and controls ensure internal components are not exposed
ASSEN Company offers a high degree of dehydration and degasification leaving your transformer oil dry and free of unwanted oxygen and combustible gases.
Oil Purification System's Feature
Dehydration
Moisture within a transformer can lead to premature aging, can increase the rate of paper decay, and lead to dielectric failure in extreme cases. Assen Transformer Oil Purification Plant will reduce the moisture content of transformer oil and windings. A vacuum oil purification plant can be conducted via a hot oil dry-out or a high vacuum dry-out.
Degasification
ASSEN Transformer Oil Degasification Treatment is often conducted on a unit that has had oil removed or added during the course of installation, maintenance or repairs. In addition, A Degasification Treatment is used to reduce dissolved combustible gases caused by internal electrical faults and overheating. The ASSEN oil degassing plant is specially designed for processing transformer oils and in preserving the integrity of transformer insulation system.
Vacuum Filling
The fundamental function of this treatment is to replace the existing transformer oil of low quality, with new or reclaimed oil of acceptable quality. The current oil is drained from the transformer into a storage tank. The transformer is, then, filled with new oil using a vacuum-filling technique. vacuum filling a transformer is an efficient method of removing contaminated oil and is ideal when little downtime can be afforded.
OPERATION MANUAL
I Installation
a). Connect hoses between the inlet MV02 of the purifier to the outlet (usually at the bottom) of the tank, the outlet MV01 of the purifier to the inlet (usually at the top) of the tank.
b). Open the drain valve MV13 of the condenser, close the drain valve until the liquid in the condenser is drained.
c). Connect the three-phase three-wire 380V / 50HZ power supply and ground cable to the terminal block, Open circuit breaker QS1, QS2 and QS3. The power indicator on the control panel should be light on.
d). If the power indicator is off, troubleshooting is required according to the PR indicator in the cabinet. The purifier will stop automatically when phase sequence, overvoltage, and Undervoltage power failure occur.。
e). Turn on the “outlet pump” select switch and Turn off the “outlet pump” select switch immediately. Observe whether the direction is the same as the arrow on the pump body.
f). If the motor is turned incorrect, disconnect the power supply and exchange the wiring of any two terminals of the pump motor cable. The motor’s direction is to be set correctly before leaving the factory. This operation is only needed when the motor or cabinet is rewired.
g). Check the direction of the vacuum pump and Roots pump by checking the oil outlet pump’s direction. The motor’s direction is to be set correctly before leaving the factory. This operation is only needed when the motor or cabinet is rewired.
g). Turn on the vacuum pump. After running for 5 minutes, check whether the oil level of the vacuum pump and roots pump is within the allowable range.
h). Select the operating mode “Manual or Auto”. Set to “Manual” at the factory.
i). Enter the “Set” menu to set operating parameters. At the factory, the heating temperature is set to 60 ° C.
II Startup
1. Open the oil inlet valve MV02 and the cycle valve MV03.
2. Turn on the “Auto/vacuum pump” select switch. The PLC automatically opens the oil pump, the oil inlet solenoid, and the oil pump (P03) as needed.
3. Pay attention to the foam level in the degassing chamber when the purifier is in operation early. When the foam level is higher than the center of the sight glass, the air valve MV07 should be partially opened until the foam level is below the sight glass. Purifier with an automatic defoaming system does not need to do this.
4. Turn on “Heater 1” or “Heater 2” select switch as needed.
5. During the internal circulation, the foam level will gradually become less, this time can be slightly closed valve MV07, but the foam level is always lower than the center of the sight glass. Purifier with automatic defoaming system do not need to do this.
6. When the foam in the degassing chamber disappears, open the oil outlet valve(MV01), partially or completely close the cycle valve MV03.
III Stop
1. Turn off the “heater 1” and the “heater 2” and wait for more than 1 minute.
2. Turn off the “Auto/vacuum pump” select switch and close the oil inlet valve MV02, and open the air valve MV07.
3. If you want to pump out the oil in the vacuum chamber, turn on the “Outlet pump” select switch. Turn off the “Outlet pump” select switch when the oil in the vacuum chamber is drained.
4. After the Vacuum gauge pointer return to 0Mpa, close the air valve MV07 and the oil outlet valve MV01.
5. Switch off the power supply to the purifier.
IV Use Inlet Pump alone
1. Purifier with oil inlet pump, can be used separately when the oil does not need to be degassed (eg transfer oil between a tank or empty oil of transformer).
2. Open oil inlet valve (MV02) and the oil outlet valve (MV01).
3. Turn on the “Heater 2” select switch and keep the “Vacuum pump”,” Outlet pump”,” Heater 1” select switch in the off position.
Assen is a professional manufacturer of oil purifier machines, if you have any requirements,
please contact: [email protected], Tel:+86-238870383